I Love Lucy, a CBS television sitcom that aired in the 1950s, was the most popular American sitcom of its generation and of all time. It starred comedian Lucille Ball, her husband Desi Arnaz, Vivian Vance and William Frawley. The show is centered around Lucy Ricardo, her husband Ricky Ricardo, a singer and bandleader, and their friends and landlords Fred and Ethel Mertz.